Grubbs, D. M. (1939). Fauna of the Niagaran nodules of the Chicago area. Journal of Paleontology. 13(6): 543-560.
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Grubbs, D. M.
1939
Fauna of the Niagaran nodules of the Chicago area
Journal of Paleontology
13(6): 543-560
Publication
Available for editors
Nodules consisting of nuclei of siliceous fossils in a matrix of calcium carbonate occur in the Niagaran dolomite near Chicago. The nodules contain an invertebrate fauna of small individuals comprising 52 genera and 66 species of which 9 genera and 34 species are herein described as new.